Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers

Dr. Robert Tri Nguyen, MD

Accepting New Patients

(No ratings)

Specializes in: Adult Hospital Medicine

Autonomous University of Guadalajara Faculty of Medicine

1600 N Rose Avenue
Oxnard, CA 93030

(805) 988-2505

Dr. Robert Tri Nguyen, MD is an internal medicine hospitalist in Oxnard, CA specializing in adult hospital medicine. He graduated from Autonomous University of Guadalajara Faculty of Medicine. Dr. Robert Tri Nguyen, MD is affiliated with Dignity Health and St John's Regional Med Center/St John's Hospital Camarillo.

Office Locations

St John's Regional Med Center/St John's Hospital Camarillo

1600 N Rose Avenue
Oxnard, CA 93030

(805) 988-2505

(805) 988-2502

open_in_new

815 Cooper Road
Oxnard, CA 93030

(805) 487-9892

(805) 487-7590

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Robert Tri Nguyen, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

inpatient hospital care

In 2023, Dr. Robert Tri Nguyen, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2012 were hospital care, inpatient care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

doctor visit	1003
hospital care	840
inpatient care	797
musculoskeletal imaging	24
outpatient care	43
thoracic (chest) imaging	54
ultrasound (sonogram)	24
X-rays	54

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2013 were hospital care, inpatient care, outpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

aspiration	15
doctor visit	832
hospital care	920
injections	15
inpatient care	774
musculoskeletal imaging	23
outpatient care	146
thoracic (chest) imaging	16
ultrasound (sonogram)	23
X-rays	16

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	288
Female	366

**Ethnicity**
Non-Hispanic White	267
Black	0
Hispanic	326
Asian	42
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	208
85 and over	148
Less than 65	100

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2013

Hypertension	75
High Cholesterol	61
Stroke	14
Ischemic Heart Disease	48
Depression	28
Chronic Kidney Disease	41
Asthma	8
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	34
Chronic Obstructive Pulmonary Disease	23
Diabetes	46
Dementia	23
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2014 were hospital care, inpatient care, outpatient care and aspiration.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

aspiration	25
doctor visit	824
hospital care	960
injections	25
inpatient care	853
outpatient care	107

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	283
Female	350

**Ethnicity**
Non-Hispanic White	251
Black	0
Hispanic	321
Asian	43
Other	0
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	208
85 and over	145
Less than 65	83

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2014

Hypertension	75
High Cholesterol	56
Stroke	13
Ischemic Heart Disease	45
Depression	28
Chronic Kidney Disease	36
Asthma	9
Osteoperosis	9
Atrial Fibrilation	18
Heart Failure	33
Chronic Obstructive Pulmonary Disease	19
Diabetes	44
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2015 were hospital care, inpatient care, outpatient care and ear procedures.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

doctor visit	829
ear procedures	11
hospital care	1085
inpatient care	1007
outpatient care	78

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	714
Female	792

**Ethnicity**
Non-Hispanic White	558
Black	0
Hispanic	784
Asian	108
Other	0
Native American	0

**Age**
From 65 to 74	492
From 75 to 84	488
85 and over	296
Less than 65	230

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2015

Hypertension	75
High Cholesterol	62
Stroke	15
Ischemic Heart Disease	46
Depression	29
Chronic Kidney Disease	45
Asthma	15
Osteoperosis	9
Atrial Fibrilation	20
Heart Failure	37
Chronic Obstructive Pulmonary Disease	21
Diabetes	50
Dementia	20
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

doctor visit	405
hospital care	1155
inpatient care	1060
outpatient care	95

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	316
Female	350

**Ethnicity**
Non-Hispanic White	353
Black	19
Hispanic	243
Asian	37
Other	14
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	229
85 and over	154
Less than 65	88

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2016

Hypertension	75
High Cholesterol	66
Stroke	17
Ischemic Heart Disease	51
Depression	31
Chronic Kidney Disease	49
Asthma	23
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	37
Chronic Obstructive Pulmonary Disease	21
Diabetes	44
Dementia	25
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	1367
inpatient care	1291
outpatient care	76

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	240
Female	316

**Ethnicity**
Non-Hispanic White	407
Black	0
Hispanic	94
Asian	29
Other	14
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	187
85 and over	181
Less than 65	61

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2017

Hypertension	75
High Cholesterol	69
Stroke	18
Ischemic Heart Disease	64
Depression	40
Chronic Kidney Disease	62
Asthma	13
Osteoperosis	17
Atrial Fibrilation	28
Heart Failure	50
Chronic Obstructive Pulmonary Disease	29
Diabetes	46
Dementia	30
Cancer	19

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	1374
inpatient care	1288
outpatient care	86

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	265
Female	301

**Ethnicity**
Non-Hispanic White	413
Black	16
Hispanic	99
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	151
From 75 to 84	180
85 and over	166
Less than 65	69

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2018

Hypertension	75
High Cholesterol	69
Stroke	19
Ischemic Heart Disease	60
Depression	39
Chronic Kidney Disease	63
Asthma	14
Osteoperosis	14
Atrial Fibrilation	31
Heart Failure	51
Chronic Obstructive Pulmonary Disease	29
Diabetes	46
Dementia	32
Cancer	20

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	1254
inpatient care	1170
outpatient care	84

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	232
Female	277

**Ethnicity**
Non-Hispanic White	364
Black	18
Hispanic	92
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	165
85 and over	128
Less than 65	56

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2019

Hypertension	75
High Cholesterol	74
Stroke	19
Ischemic Heart Disease	61
Depression	38
Chronic Kidney Disease	66
Asthma	14
Osteoperosis	16
Atrial Fibrilation	33
Heart Failure	53
Chronic Obstructive Pulmonary Disease	33
Diabetes	45
Dementia	27
Cancer	18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	970
inpatient care	885
outpatient care	85

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	206
Female	235

**Ethnicity**
Non-Hispanic White	283
Black	18
Hispanic	113
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	150
85 and over	118
Less than 65	59

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	65
Depression	37
Chronic Kidney Disease	68
Asthma	13
Osteoperosis	16
Atrial Fibrilation	26
Heart Failure	52
Chronic Obstructive Pulmonary Disease	25
Diabetes	52
Dementia	25
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	1010
inpatient care	922
outpatient care	88

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	203
Female	249

**Ethnicity**
Non-Hispanic White	293
Black	0
Hispanic	111
Asian	22
Other	14
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	135
85 and over	128
Less than 65	62

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2021

Hypertension	75
High Cholesterol	73
Stroke	18
Ischemic Heart Disease	61
Depression	39
Chronic Kidney Disease	66
Asthma	11
Osteoperosis	18
Atrial Fibrilation	26
Heart Failure	50
Chronic Obstructive Pulmonary Disease	23
Diabetes	49
Dementia	31
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

hospital care	1186
inpatient care	1101
outpatient care	85

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Male	203
Female	234

**Ethnicity**
Non-Hispanic White	237
Black	12
Hispanic	137
Asian	35
Other	16
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	140
85 and over	110
Less than 65	54

Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	29
Ischemic Heart Disease	51
Depression	32
Chronic Kidney Disease	45
Asthma	16
Osteoperosis	19
Atrial Fibrilation	41
Heart Failure	43
Chronic Obstructive Pulmonary Disease	29
Diabetes	51
Dementia	16
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert Tri Nguyen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Robert Tri Nguyen, MD treated as an internal medicine hospitalist in Oxnard, CA were hospital care, inpatient care, outpatient care and X-rays.

aspiration	20
doctor visit	778
ear procedures	11
hospital care	1101
injections	20
inpatient care	1013
musculoskeletal imaging	23
outpatient care	88
thoracic (chest) imaging	35
ultrasound (sonogram)	23
X-rays	35

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert Tri Nguyen, MD.

**Gender**
Female	315
Male	268

**Ethnicity**
Black / African American	7
Asian / Pacific Islander	34
Non-Hispanic White	311
Hispanic	210
Native American / Alaskan Native	0
Other	5

**Age**
85 and over	143
75 to 84	190
Less than 65	78
65 to 74	172

Average of Total of Conditions of Medicare patients treated by Dr. Robert Tri Nguyen, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Robert Tri Nguyen, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	61
Stroke	16
Ischemic Heart Disease	50
Depression	31
Chronic Kidney Disease	49
Asthma	12
Osteoporosis	13
Heart Failure	40
Chronic Obstructive Pulmonary Disease	22
Diabetes	43
Atrial Fibrillation	23
Dementia	22
Cancer	14

Education & Training

Dr. Robert Tri Nguyen, MD graduated from Autonomous University of Guadalajara Faculty of Medicine. He completed residency at Mercy Hospital and Medical Center, Chicago. He is certified by the Internal Medicine and has a state license in California.

Medical School: Autonomous University of Guadalajara Faculty of Medicine

Residency: Mercy Hospital and Medical Center, Chicago

Board Certification: Internal Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Robert Tri Nguyen, MD is associated with these hospitals and organizations:

Dignity Health

St John's Regional Med Center/St John's Hospital Camarillo

Ratings & Reviews

Dr. Robert Tri Nguyen, MD does not have any reviews yet, be the first to leave a review of Dr. Robert Tri Nguyen, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. Robert Tri Nguyen, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$247 FARXIGA $125	BRILINTA $122
Boston Scientific Corporation	$234 WATCHMAN $125	Tachy System $109
Novo Nordisk Inc	$193 Victoza $193
Medtronic USA, Inc.	$156 KYPHON Balloon Kyphoplasty $156
Takeda Pharmaceuticals America, Inc.	$139 Contrave $106	Colcrys $32
Other	$552 CLEVIPREX $112	Interventional Therapies $78	Arctic Front $58	DALVANCE $51	XARELTO $37	Other $217

**Types of Payments**
Food and Beverage	$1,489
Education	$32

Biography

Dr. Robert Nguyen practices adult hospital medicine in Oxnard, CA. He obtained his medical school training at Autonomous University of Guadalajara Faculty of Medicine and performed his residency at Mercy Hospital and Medical Center, Chicago. Dr. Nguyen is affiliated with Dignity Health. Dignity Health reports that he is accepting new patients at his office in Oxnard, CA.